#include <iostream>

#include <cmath>

using namespace std;

int main()
{
	float x,y;
	int num=1;
	cin>>x;
	do{
		num=num*10;
		y=x*num;
	}while(fabs(y-(int)y)>1e-9);
	cout<<y<<endl;
	return 0;
}
